I’m not here to ask you to share BIOS or ROMs.don’t want to offend forum rules.
I want to dump BIOS from my own FZ-10 console legally.

Because some of you are talking about homebrew and emulator, anybody here can share me technical information about how to dump 3DO bios?

I have one FZ-10 which only display 3DO logo and goes black. CD is not spinning at all. Is this logo a part of BIOS?
If yes, I want to do some soldering on IC’s JTAG pins and try to dump BIOS from JTAG if that’s possible.

So I thought dumping address map above through JTAG pins using Arduino GPIO works.
Problem is, I need to lift five 0.5mm pitch ARM60 IC pins and solder thin wires to each of these pins without breaking them.
I can do this by 80% success rate but I’m sure 3DO will be dead afterwards.

Method 2:
My goal is to dump BIOS. How about running homebrew which reads 0x3000000 to 0x30FFFFF and display all data on screen, then take photo, and do character recognition on the photo to obtain BIOS.

Problem is, I have no idea how to write my own homebrew. Most of links in tutorial threads are dead too.

The problem is that the BIOS is on a maskrom. It cannot be written to so it would need removing from the board anyway if you were looking to replace it. Therefore method 3 is the only viable option to successfully read and replace the bios. The Bios is most likely functioning normally.

The spindle is an issue. I'm not sure it's possible to obtain replacement laser assemblies for FZ-10. The only solution is to replace with a spindle from another top loading CD player.

I’m not trying to replace BIOS. I’m just trying to dump BIOS and that’s it.
Whole MASKROM bios is mapped to certain memory map location so I tried to read whole memory map.
Anyway, I guess most easiest and most proven way is desolder BIOS chip.

I’ll try to remove BIOS chip from board and read it using 29LV160 Flash reader. Equipments are on the way.
By the way, after I remove BIOS chip on board, write BIOS on MX29LV160TMC SOP44, and solder MX29LV160TMC back on 3DO, will 3DO work?

Which indicate that root cause isn't on power board.
It might be defective lens unit or defective mother board. Anyway, I guess I need to say good bye to this non working 3DO’s mother board and take off BIOS chip on it.

At least that rules out a bad PSU. Could still be a defective cap on motherboard but is more likely a defective CD drive. A 3DO USB mod replaces the CD drive and could be a solution. If you are still keen to read bios, check with the dumped bios online for similarities/ corruption. You can replace with a 29LV160 but you need a jumper wire between pin 1 (Reset) and pin 23 (5V) for the new bios to function.

Do I need to lift reset pin?
It looks like pin1 isn’t connected to anything so I guess I just need to add jumper wire.
I think it’s better to add 10kohm between reset and VDD instead of directly connecting reset to VDD.

That pad is not connected to anything so it doesn't need lifting. I should have recommended MX29F800 instead of MX29LV160, my bad. The MX29F800 is a correct 5V flash rom. The MX29LV160 is a 3V flash rom. It will still work but its best practice not to use 3V signals in a 5V system. If you decide to use a MX29F800, Solder a wire from pin 23 (5V) to pin 44 (Reset). Both pads 1 and 44 are not used so you can leave the chip pins soldered to them.

It is common practice to use a current limiting resistor (1k - 10k) when pulling pins high on some IC but it's up to you.

Why is this lens squashed...? Applied too high voltage on lens and lasor beam melted the lens? Last owner did something on this but not sure what he done to this.
I want to try swapping lens on these two consoles but I don’t want working lens to be melted too. Maybe I shouldn’t mess around with working one that much.

Good investigating. At least you know that 3DOA laser is dead and there is a fault on the motherboard as well. At this stage you will need an oscilloscope and the service manual to test further where the problem is. It may be a faulty capacitor on the main board or a faulty IC or the BIOS. At least you have a working 3DOB. Not sure where you can acquire a new plastic clip, you may have to salvage one from another junk 3DO.

Great work! I think IC680 is not used on newer FZ-10 with the ANVIL combined chip. Do you have any pics of the leakage around the IC. IC don't leak so this must be leakage from a near by capacitor. There may be trace damage. I would recap the motherboard and clean the residue before it causes any more damage. Then continuity test for broken traces.